She said the office must collaborate with partners in the community and in federal, state and local law enforcement to tackle threats to the health and safety of Vermonters, "from the opiate epidemic and violent crime to crippling financial frauds to child exploitation."

Nolan will lead an office of about 45, including 20 attorneys who represent the United States in criminal and civil litigation in Vermont.

Nolan has served as an assistant U.S. attorney since 2010. In recent years she has focused on drug cases.